LED Descriptions
A-2 Problem Solving
LED Descriptions
The module and port LEDs provide dynamic indications of the status of the module
and ports. The LEDs can be in various states and can change color depending on the
operational status of the module or port and the level of activity on the network.
Module LED States
The module’s LEDs can be in various states (off, on, or flashing) and can change color
depending on the operational status of the module or the level of activity on the
network.
Table A-1 shows the states that are possible for each of the module’s LEDs.
Table A-1: Module LED States
LED
Name
ICONS
Off
On Flashing
Power
No power to
module.
Module
receiving
power.
Faulty power
connection or
insufficient
power.
Module
OK
After 2
minutes, the
module failed
self-test.
Module
passed self-
test.
Non-fatal self-
test failure.
Unit may still
be operational.
Network
OK
Module is not
connected to a
properly
terminated and
enabled LAN
through the
DEChub 900.
Network
connection
is
operational.
Network
connection is
disabled by
network
management.
Network
Activity
No network
activity.
Network has
heavy traffic.
Flashes more
rapidly and
appears
brighter as
network traffic
increases.
